作者:M. N. Sultankhodzhev、M. S. Yunusov
DOI:10.1007/bf00596673
日期:1987.11
methyl group (0.74 ppm, 3H, doublets J = 7 Hz). The mass spectrum of the alkaloid was close to those of bases of the songorine group [2]. When the alkaloid was acetylated with acetic anhydride in the presence of pyridine, a diacetyl derivative (II) was obtained with mp 128-130°C (petroleum ether), the PMR spectrum of which showed the signals of a secondary methyl group (0.63 ppm, 3H, d, J = 7 Hz),
继续分离在 R. Irisu (KirgSSR) [i] 山谷中收集的 Aonitum karacolicum Rapaics. 表皮部分的总生物碱,我们已经分离出一个碱,其组成为 C22Ha3NO 3 (I),mp 202- 204°C(乙醇)。生物碱的 IR 光谱在 3400-3500 cm -I 处具有羟基的吸收带,在 1700 cm -l 处具有六元环中羰基的吸收带。 PMR 光谱(CDCI3,6 级)显示来自N-乙基(1.00 ppm,3 H,三重峰,J = 7 Hz),来自叔 C-甲基(0.68 ppm,单峰)和来自仲甲基(0.74 ppm,3H,双峰 J = 7 Hz) )。生物碱的质谱接近松果碱组的碱基 [2]。当生物碱在吡啶存在下用乙酸酐乙酰化时,得到了 mp 128-130°C(石油醚)的二乙酰衍生物(II),其 PMR 谱显示了仲甲基(0.63 ppm, 3H, d,